Home / 12,181.03-18,271.68-4,389.91

Finding the Fourth Proportional to 12,181.03, 18,271.68 and 4,389.91

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Solution

The fourth proportional to 12,181.03, 18,271.68 and 4,389.91 is: 6,584.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.03 : 18,271.68 = 4,389.91 : x
  2. Step 2: Convert to fraction form
    12,181.03/18,271.68 = 4,389.91/x
  3. Step 3: Cross multiply
    12,181.03x = 18,271.68 × 4,389.91
  4. Step 4: Simplify right side
    12,181.03x = 80,211,030.75
  5. Step 5: Solve for x
    x = 80,211,030.75/12,181.03
  6. Step 6: Final answer
    x = 6,584.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.